Glass-forming machine



Nv. l5, 1927.`

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Nov. 15, 1927.

l 1,649,641 G. E. ZEILER GLAss FORMING MACHINE Filed April e, 1922 2 sheets-sheet 2 FH12. F E E- FlEfn I 49 l e' ll t) Patented Nov. 15, 1927.

UNITED STATES PATENT OFFICE.

GEORGE E. ZEILER, OF PITTSBURGH, PENNSYLVANIA.

GLASS-FORMING MACHINE.

Application led April 6,

The invention relates to glass working ma chines and it has particular relation to machinos for shaping glass receptacles while in a plastic state. v

One of the objects of the invention is to provide a machine, of the character des scribed, by means of whichthe final shaping operations may be auton'iatically performed upon a partially formed glass receptacle in a plastic state.

Another object of the invention is to provide. a. machine, of the class described, that is particularly adapted to spin the upper or rim portion of glass tumblers in, an inwardly` direction, for the purpose of cupping the same.

Vv ith such objects in view, as wellas other advantages which may be incident to the utilization of the improvements, the invention consists in theV parts and combination thereof hereinafter setv forth and claimed, with the understanding that the several necessary elements constituting the same may be varied inl proportion and arrangement without departing from the nature and scope of the invention.

In order to make the invention more clearly understood, means areshown in the accompanying drawings, for carrying .the same into practical effect, wit-hout limiting the improvements in their useful applica-tion, to the particular constructions, which, for

the purpose of explanation, are made the subject of illustration. y

In 'the accompanying drawingsz- Figure 1 is a side elevational view of a glasseforming machine embodyinglthe invention Fig. 2 is av vertical sectionalV View, on a larger scale, through the forming tool or head and the 'co-acting receptacle supporting member having a` glass tumbler disposed thereon, and with t-he various elements in their initial or raised positions. f

Fig. 3 is a similar view with the forming tool in engagement with the upper. portion of the tumbler and at the limit of its downward stroke.

Fig. l is a view similari to 2 but illustrating` a forming tool adapted to impart aV substantially barrel shape to a glass tumble-r. l

Referring to the drawings, a glass shaping machine embodying the invention is illustrated 'as comprising a base 1 which may be mounted upon wheels 2 if so desired to fa- 1922. 'serial No. 550,004.

3 is mounted upon the base 1 and is provided `with upper and lower forwardly extending arms or brackets l` andy 5 respectively, which carry a. vertically reciprocable and rotatable spindle 6. y y

The spindle 6 carries a detachable forming head (if at its lower extremity and is rotated by means of a bevelled gear 7 splined to the upper portion thereof. The gear 7 and spindle are driven by a` bevelled pinion 8 fixed tothe. forward end of a horizontally extending power shaft 9, which is mounted in suit-A able bearings 10 carried by the upper arm 4 and a bracket 11 fixed to the upper portion o-f the pedestal 3. The shaft 9.is driven by means of a, pulley 12 and ay belt 13, from a suitable source of power, which is shown as comprising an electric. motor 141. mounted uponnthe base 1.

A vertically adjustable bracket or arm 15 is `mounted upon thek pedestal 8 and carries ay table 16 which extends beneath the spindle 6 and upon which a receptacle or housing.V 17 is mounted. A vertically movable support-ing member 18, in the form of a plate f `or disk, is movably mounted within the housing 17 and isprovided with a stem 19 which extends downwardly through an aperture in the table 16. The lower extremity of the stem 19 is detachably seated in a. socket 2O carried by the upper extremity of a rod 21 fixed to a. piston22 which Lreciprocates within acylinder 23 mounted on the base 1 Aof 'the machine. y y

Compressed air isadmitted to the lower portion of the cylinder 23 `to normally mainx tain the piston 22 and its associated parts, in a raised position, by means of a pipe 24` and reduction valve 25 from a pipe 26 which conununicates with the rear end of a suit able automatic valve 27 preferably of the well known Miller type. Air under pressure is suppliedto the valve 27 from a pipe 28. Air is also admitted to the upper portion'of the cylinder 23 when it is desired to lower the piston, by means of a pipe 29 and reducing'valve 30 from a pipe 31 which communicates with the forward end of the valve 27. A bleeder valve 32 is mounted upon the base and in a position whereit is easilyaccessible'to the, foot ofthe operator, and communieates with one side of the valve 27`by means of pipe 3.3.

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within the housing 17 preparatory to operating thereon, the bleeder valve B2 is pressed downwardly by the operator which action.`

permits sufficient air to escape fromone side of the valve 27 to lower the pressure therein.

The escape of air from one side ofthe valve` 27 causes an unbalanced pressure therein which causes it to functionin the wcll-lmown lower portion of the cylinder 23 to escape to the atmosphere and admits air under `pressure tothe upper portion ot the cylinder. Thepiston `252,` and its associated parts, are thereby caused to descend and to lower the tumbler into the housing 17. 'lhespindlc G and forming; tool 6 are reciprocated in a vertical direction by means of a yoke 34 carried bythe upper end of a `rod 35, which engages a grooved collar 36 fixed to the spindleG. 'i The rod A35 extends downwardly and is lixcd toa piston 37 mountedlin a compressed air cylinder 3S carried by the table 16;`

Air is admitted to the lower portion of the cylinder 38,ito normally maintain the piston 37 and associated parts in a raised position, by means of a reduction valve 41 and, pipe which communicate with the pipe 526 and the valve 27.` Air is also ad mittedtojthe upperf portion of the cylinder 38, to lower the pistoni and spindle 6 when desired,by means of a reduction valveV 39.and piped() which connnunieates with the pipe 31. y

iVllhengthe bleeder valve 32 is operated, as previously set iorth,` to cause the valve 27 tobe actuated to lower the supporting member 18,` the valve"`27 simultaneously estalolishes "communication between the lower por-` tion ot' the cylinder 38 and the outside atmosi phere and between the upper portion thereof and "the" source of compressed air. The spindle @fand rapidly rotating forming tool are therefore caused to descend simultaneously with the plunger 18.

The various reduction valves are, however, so adjusted that the air is "admitted into and escapes from the cylinders 23 and Siat different volumes with the result that the rotating' `spindle and forming tool 6 ascend and descend more rapidly than plunger 18, so as to insure that the glass article isiseated before the forming tool 6 contacts` therewith, and so that the operator can remove the" article after ,Y being operated onfg` i i "y Aribleeder `'valve 4:3I is mounted upon the lower arm of thepedestal 3 and in the path of ino'vementfof an adjustable valreactuat ing member i4 carried by theyole 31l-, and establishes communicationbetween the `forward end` oftheautomatic valve 27 and the outside atmosphere by means of a pipe 45. As the spindle (3 and forming tool l5 approach the predetern'iined limit of their downward` stroke, the actuating meniber elet engages and opens the valve 43 and actuatcs the Vautomatic valye 27 in a manner similar to that described in connection with the Valve 32, but in the opposite direction. The result is that connnl'lnication is simultaneously established between the upper portion ot' the cylinders Q3 and 38 and the outside atmosphere and between the lower portions thereot and the source of compressed air. The spindle (i and toi-ming tool ti are thersiloro :uitomatically raised out oit engagement with the liorincd tumbler or other articleand the embrace the upper or rim portion of a tum`` bier to spin (cup) the same in an inward direction. The 2class engaging;4 surface ot the tool G is provided *with a plurality ol 1nwardly projecting longitudinally extending ribs 4:6 having depressions or channels il therebetween and are adapted to engage the surface of the glass with a spinning action. The advantages of this construction are that the area ot thetorining,r tool which engages the tumbler is materially decreasedand the friction between the tool and the glasslconsequently reduced without impairing the elliciency" of the machine.

Air ducts i9 are provided in the tool 6* to prevent the 4formation of a vacuum with the article. y

lllhile a substantially cup-sh aped :formingr tool adapted to engage the outer edge of an article has been shown and described, it will be understood that a tapered tool may be eln-` ployed which is adapted to engage the inner edge of the article to "forni a Hai-ed open ing', similar to the well-lnown sbc-lai"glassa without departinpr 'from the spirit of the invention. i i

l claim: l. Aglass 'forming` machina comprismar a vvertically movable :Forming member and a vertically movable member cro-operating therewith adapted to support a plastic article andmeans for` causing one ot said members to move at a greater rate of speed than "the other. 1 i

2. A glass forming machine connnising a vertically movable rotatable lforn'iinpr tool, a vertically movable mcmben fro-operating therewith adapted to support aplastic'article and to lower the same within the path of movement of said forming; tool and means for synchronizingthe vertical movements of said forming' tooland saidsupporting lueur ber with respect to each other.

llltl 3. A, glass forming machine comprising a rotatable forming tool, a receptacle adapted to contain a plastic article, and a plunger disposed within said receptacle and adapted to raise said article with respect thereto simultaneously with the upward movement of said 'forming tool, but at a` slower speed.

t. A, glass 'forming machine comprising a vertically reciprocable and rotatable forming tool, a reciprocable member co-operating therewith adapted to support a plastic article 'for eugagen'ient by said forming tool, and means 'for causing said supporting member to lower said article at a slower rate of speed f than the speed of said forming tool.

5. A glass forming machine including a vertically movable rotatable' formingihead, a receptacle adapted to contain a plastic article, a plunger' tor supporting said article within said receptacle and fluid pressure means for raising and lowering said forming head and plunger simultaneously at different speeds.

6. A glass forming machine including a vertically movable rotatable forming head, a. fluid pressure actuated piston for reciprocating said forming head, a receptacle adapted to contain a plastic article, a plunger for supporting said article within the receptacle and a fluid pressure actuated piston for reciprocating said plunger at a slower speed than said forming head. i

7. A glass forming machine having in combination, means for movably supporting ya plastic article, a fluid pressure actuated forming head adapted to shape an article on said supporting means and an automatically operated valve for controlling the operation of said forming head and the movement olf said supporting means.

8. A glass forming machine including a vertically movable rotating forming head, a rcceptacle adapted to contain a plastic artivele, a plunger itor supporting said article within said receptacle and means tor raising said forming head and plunger simultaneously at different speeds.

In testimony whereof, I have hereunto subscribed my name this 25th day of March, 1922.

GEO. E. ZEILER. 

